The Pelagic Mack Polarized Sunglasses are made with a full shield lens adding the benefit of precision eyesight. The Mack sunglasses offer a unique look and designed to fit on a wide range of facial types. These sunglasses feature Carbonite-16 frame technology which combats extreme conditions of offshore environment. The frames are durable, flexible, lightweight, and comfortable. These sunglasses are perfect for on land or at sea. The XP-700 lens provides true color perception that cuts glare during mid-day sessions on the water. Features: Melanin technologyEnhanced clarity and contrast5-Layer anti reflective coatingOleophobic/HydrophobicMulti-layer anti-scratch hard coatingMelanin is a pigment found throughout the human body that acts as a natural defense against the sun. Melanin is infused in all Pelagic sunglass lenses. As a result these sunglasses protect effectively and naturally against UV and HEV rays. These lenses also help reduce eye strain and fatigue, along with true color perception.